Home / 45,919.71-68,871.47-12,631.75

Finding the Fourth Proportional to 45,919.71, 68,871.47 and 12,631.75

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Solution

The fourth proportional to 45,919.71, 68,871.47 and 12,631.75 is: 18,945.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,919.71 : 68,871.47 = 12,631.75 : x
  2. Step 2: Convert to fraction form
    45,919.71/68,871.47 = 12,631.75/x
  3. Step 3: Cross multiply
    45,919.71x = 68,871.47 × 12,631.75
  4. Step 4: Simplify right side
    45,919.71x = 869,966,955.84
  5. Step 5: Solve for x
    x = 869,966,955.84/45,919.71
  6. Step 6: Final answer
    x = 18,945.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.